linux-kernel - Re: [PATCH v3] regmap: add iopoll-like atomic polling macro

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Message-ID: <fa5198bf-0001-3a57-017f-1b40e0188606@gmail.com>
Date:   Thu, 9 Jan 2020 09:00:17 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sameer Pujar <spujar@...dia.com>, broonie@...nel.org
Cc:     jonathanh@...dia.com, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH v3] regmap: add iopoll-like atomic polling macro

09.01.2020 08:09, Sameer Pujar пишет:
> This patch adds a macro 'regmap_read_poll_timeout_atomic' that works
> similar to 'readx_poll_timeout_atomic' defined in linux/iopoll.h; This
> is atomic version of already available 'regmap_read_poll_timeout' macro.
> 
> It should be noted that above atomic macro cannot be used by all regmaps.
> If the regmap is set up for atomic use (flat or no cache and MMIO) then
> only it can use.
> 
> Signed-off-by: Sameer Pujar <spujar@...dia.com>
> ---

Could you please explain what is the targeted use-case here?